Wireless in-vehicle networking enhanced interference detection via external sensors

Patent metadata

Field	Value
Publication number	US-2021227365-A1
Application number	US-202016997810-A
Country	US
Kind code	A1
Filing date	Aug 19, 2020
Priority date	Jan 17, 2020
Publication date	Jul 22, 2021
Grant date	—

Abstract

Techniques described herein leverage existing localization sensors or V2X devices to detect one or more other vehicles that include wireless systems that can interfere with in-vehicle wireless networks. The localization sensors or V2X devices can provide information to determine a location, a heading, a speed, a size, and a type of other vehicles. This information can be used to determine a probability of network interference and allow the in-vehicle wireless networks to employ one or more techniques to mitigate the effects of the interference. The interference mitigation techniques can include increasing or decreasing transmitter power, changing a frequency or a channel of a wireless transmitter, or activating one or more additional transmitters as relays to improve reliability.

First claim

What is claimed is:

1 . A method of detecting and mitigating radio frequency (RF) interference at a first vehicle, the method comprising:
detecting one or more vehicles within a threshold distance of the first vehicle; responsive to the detecting, determining a location and a motion state of the one or more vehicles; determining potential RF interference of at least a portion of a wireless network of the first vehicle by the one or more vehicles based at least in part on the determined location and the determined motion state of the one or more vehicles; and implementing an interference mitigation technique based at least in part on on the determined location and the determined motion state of the one or more vehicles.

2 . The method of claim 1 , wherein the detecting the one or more vehicles within a threshold distance of the first vehicle comprises:
receiving one or more return signals from a sensor of the first vehicle; determining a distance of the one or more vehicles based on the one or more return signals; and determining the distance is less than the threshold distance.

3 . The method of claim 2 , further comprising:
determining a velocity of the one or more vehicles based on the one or more return signals, wherein the velocity includes a speed component and a direction component; and determining the threshold distance based at least in part on the determined velocity.

4 . The method of claim 2 , wherein the sensor of the first vehicle comprises a radar, a LIDAR, a camera, an ultrasound sensor, or any combination thereof.

5 . The method of claim 1 , wherein the detecting the one or more vehicles within a threshold distance of the first vehicle comprises receiving one or more V2X messages.

6 . The method of claim 5 , wherein the determining the location and the motion state of the one or more vehicles comprises:
receiving the one or more V2X messages from the one or more vehicles; and determining, from the one or more V2X messages, a location, a heading, and a speed of the one or more vehicles.

7 . The method of claim 6 , further comprising determining a time of the potential RF interference based at least in part on the location, the heading, and the speed of the one or more vehicles.

8 . The method of claim 6 , further comprising determining a portion of the wireless network of first vehicle based vulnerable to the potential RF interference based at least in part of the location, the heading, and the speed of the one or more vehicles.

9 . The method of claim 1 , wherein the interference mitigation technique comprises:
increasing or decreasing a power of a wireless transmitter of the wireless network, changing a frequency or a channel of a wireless transmitter of the wireless network, increasing or decreasing a gain level of a wireless receiver of the wireless network, or activating one or more additional wireless transmitters of the wireless network, or any combination thereof.

10 . A device comprising:
a memory; and one or more processing units communicatively coupled with the memory and configured to cause the one or more processing units to:
detect one or more vehicles within a threshold distance of a first vehicle;
responsive to the detecting, determine a location and a motion state of the one or more vehicles;
determine potential radio frequency (RF) interference of at least a portion of a wireless network of the first vehicle by the one or more vehicles based at least in part on the determined location and the determined motion state of the one or more vehicles; and
implement an interference mitigation technique based at least in part on on the determined location and the determined motion state of the one or more vehicles.

11 . The device of claim 10 , wherein, to detect the one or more vehicles within a threshold distance of the first vehicle, the one or more processing units are configured to:
receive one or more return signals from a sensor of the first vehicle; determine a distance of the one or more vehicles based on the one or more return signals; and determine the distance is less than the threshold distance.

12 . The device of claim 11 , wherein the one or more processing units are further configured to:
determine a velocity of the one or more vehicles based on the one or more return signals, wherein the velocity includes a speed component and a direction component; and determine the threshold distance based at least in part on the determined velocity.

13 . The device of claim 11 , wherein the sensor of the first vehicle comprises a radar, a LIDAR, a camera, an ultrasound sensor, or any combination thereof.

14 . The device of claim 10 , wherein, to detect the one or more vehicles within a threshold distance of the first vehicle, the one or more processing units are configured to receive one or more V2X messages.

15 . The device of claim 14 , wherein, to determine the location and the motion state of the one or more vehicles, the one or more processing units are configured to:
receive the one or more V2X messages from the one or more vehicles; and determine, from the one or more V2X messages, a location, a heading, and a speed of the one or more vehicles.

16 . The device of claim 15 , wherein the one or more processing units are further configured to determine a time of the potential RF interference based at least in part on the location, the heading, and the speed of the one or more vehicles.

17 . The device of claim 15 , wherein the one or more processing units are further configured to determine a portion of the wireless network of first vehicle based vulnerable to the potential RF interference based at least in part of the location, the heading, and the speed of the one or more vehicles.

18 . The device of claim 10 , wherein the mitigation technique comprises increasing or decreasing a power of a wireless transmitter of the wireless network.

19 . The device of claim 10 , wherein, to implement the interference mitigation technique, the the one or more processing units are further configured to:
change a frequency or a channel of a wireless transmitter of the wireless network, increase or decrease a gain level of a wireless receiver of the wireless network, or activate one or more additional wireless transmitters of the wireless network, or any combination thereof.

20 . A device comprising:
means for detecting one or more vehicles within a threshold distance of a first vehicle; means for, responsive to the detecting, determining a location and a motion state of the one or more vehicles; means for determining potential radio frequency (RF) interference of at least a portion of a wireless network of the first vehicle by the one or more vehicles based at least in part on the determined location and the determined motion state of the one or more vehicles; and means for implementing an interference mitigation technique based at least in part on on the determined location and the determined motion state of the one or more vehicles.

21 . The device of claim 20 , wherein the means for detecting the one or more vehicles within a threshold distance of the first vehicle comprises:
means for receiving one or more return signals from a sensor of the first vehicle; means for determining a distance of the one or more vehicles based on the one or more return signals; and means for determining the distance is less than the threshold distance.

22 . The device of

Assignees

• Qualcomm Inc

Inventors

• Vassilovski Dan
• Cheng Hong
• Patil Shailesh
• Baghel Sudhir Kumar
• Gulati Kapil

Classifications

• H04W72/541

  using the level of interference · CPC title

• H04B17/27 Primary

  for locating or positioning the transmitter · CPC title

• H04W4/38

  for collecting sensor information · CPC title

• H04W4/023

  using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds · CPC title

• H04W4/48 Primary

  for in-vehicle communication · CPC title